Dayton, TN Weather & Growing Conditions
Today
95°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Sunny. High near 95, with temperatures falling to around 92 in the afternoon. Heat index values as high as 106. East wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 37% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
| Sunday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 31% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 0 mph | 30% |
| Monday | 93°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 mph | 46% |
| Monday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 63% |
| Tuesday | 87°F | Showers And Thunderstorms | 0 mph | 84% |
| Tuesday Night | 66°F | Showers And Thunderstorms | 0 mph | 84% |
| Wednesday | 81°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 73% |
| Wednesday Night | 63°F | Showers And Thunderstorms Likely | 0 mph | 73% |
| Thursday | 80°F | Slight Chance Rain Showers | 0 to 5 mph NW | 23% |
| Thursday Night | 60°F | Slight Chance Rain Showers then Partly Cloudy | 0 mph | 23% |
| Friday | 80°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 18% |
| Friday Night | 59°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dayton, TN
Last spring frost
Apr 4
First fall frost
Oct 31
Growing season
208 days
Hardiness zone
7b
Explore more for Dayton, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Dayton 2Se, Tn (2.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.